The Tor Browser: widget/xpwidgets/nsXPLookAndFeel.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef __nsXPLookAndFeel

     7 #define __nsXPLookAndFeel

     9 #include "mozilla/LookAndFeel.h"

    11 class nsLookAndFeel;

    13 struct nsLookAndFeelIntPref

    14 {

    15   const char* name;

    16   mozilla::LookAndFeel::IntID id;

    17   bool isSet;

    18   int32_t intVar;

    19 };

    21 struct nsLookAndFeelFloatPref

    22 {

    23   const char* name;

    24   mozilla::LookAndFeel::FloatID id;

    25   bool isSet;

    26   float floatVar;

    27 };

    29 #define CACHE_BLOCK(x)     ((x) >> 5)

    30 #define CACHE_BIT(x)       (1 << ((x) & 31))

    32 #define COLOR_CACHE_SIZE   (CACHE_BLOCK(LookAndFeel::eColorID_LAST_COLOR) + 1)

    33 #define IS_COLOR_CACHED(x) (CACHE_BIT(x) & nsXPLookAndFeel::sCachedColorBits[CACHE_BLOCK(x)])

    34 #define CLEAR_COLOR_CACHE(x) nsXPLookAndFeel::sCachedColors[(x)] =0; \

    35               nsXPLookAndFeel::sCachedColorBits[CACHE_BLOCK(x)] &= ~(CACHE_BIT(x));

    36 #define CACHE_COLOR(x, y)  nsXPLookAndFeel::sCachedColors[(x)] = y; \

    37               nsXPLookAndFeel::sCachedColorBits[CACHE_BLOCK(x)] |= CACHE_BIT(x);

    39 class nsXPLookAndFeel: public mozilla::LookAndFeel

    40 {

    41 public:

    42   virtual ~nsXPLookAndFeel();

    44   static nsLookAndFeel* GetInstance();

    45   static void Shutdown();

    47   void Init();

    49   //

    50   // All these routines will return NS_OK if they have a value,

    51   // in which case the nsLookAndFeel should use that value;

    52   // otherwise we'll return NS_ERROR_NOT_AVAILABLE, in which case, the

    53   // platform-specific nsLookAndFeel should use its own values instead.

    54   //

    55   nsresult GetColorImpl(ColorID aID, bool aUseStandinsForNativeColors,

    56                         nscolor &aResult);

    57   virtual nsresult GetIntImpl(IntID aID, int32_t &aResult);

    58   virtual nsresult GetFloatImpl(FloatID aID, float &aResult);

    60   // This one is different: there are no override prefs (fixme?), so

    61   // there is no XP implementation, only per-system impls.

    62   virtual bool GetFontImpl(FontID aID, nsString& aName,

    63                            gfxFontStyle& aStyle,

    64                            float aDevPixPerCSSPixel) = 0;

    66   virtual void RefreshImpl();

    68   virtual char16_t GetPasswordCharacterImpl()

    69   {

    70     return char16_t('*');

    71   }

    73   virtual bool GetEchoPasswordImpl()

    74   {

    75     return false;

    76   }

    78   virtual uint32_t GetPasswordMaskDelayImpl()

    79   {

    80     return 600;

    81   }

    83 protected:

    84   nsXPLookAndFeel();

    86   static void IntPrefChanged(nsLookAndFeelIntPref *data);

    87   static void FloatPrefChanged(nsLookAndFeelFloatPref *data);

    88   static void ColorPrefChanged(unsigned int index, const char *prefName);

    89   void InitFromPref(nsLookAndFeelIntPref* aPref);

    90   void InitFromPref(nsLookAndFeelFloatPref* aPref);

    91   void InitColorFromPref(int32_t aIndex);

    92   virtual nsresult NativeGetColor(ColorID aID, nscolor &aResult) = 0;

    93   bool IsSpecialColor(ColorID aID, nscolor &aColor);

    94   bool ColorIsNotCSSAccessible(ColorID aID);

    95   nscolor GetStandinForNativeColor(ColorID aID);

    97   static void OnPrefChanged(const char* aPref, void* aClosure);

    99   static bool sInitialized;

   100   static nsLookAndFeelIntPref sIntPrefs[];

   101   static nsLookAndFeelFloatPref sFloatPrefs[];

   102   /* this length must not be shorter than the length of the longest string in the array

   103    * see nsXPLookAndFeel.cpp

   104    */

   105   static const char sColorPrefs[][38];

   106   static int32_t sCachedColors[LookAndFeel::eColorID_LAST_COLOR];

   107   static int32_t sCachedColorBits[COLOR_CACHE_SIZE];

   108   static bool sUseNativeColors;

   110   static nsLookAndFeel* sInstance;

   111   static bool sShutdown;

   112 };

   114 #endif

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